Automatic elevator-guard



(No Model.)

B. P. RANKIN.

AUTOMATIC ELEVATOR GUARD. No. 288,113. Patented Nov. 6; 1883.

WITNESSES IN V'EJVTOR.

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ROBERT RANKIN, OF CLAYTON, INDIANA.

AUTOMATIC ELEVATOR-GUARD.

SPECIFICATION forming part of Letters Patent No. 288,113, dated November 6, 1883.

Application filed ,Tanuary 9, 1883. (No model.)

To all whom it may concern: posts for the purpose, and have the 1151 Be it known that I, ROBERT P. RANKIN, of grooves or slides, in or upon which the ole the town of Clayton, county of Hendricks, and tor proper runs. State of Indiana, have inventedcertain new The elevator G is or may be of any orr and useful Improvements in Automatic Elenary or approved form or construction.

- vator-Guards, of which the following is a has a strike, 0, which is adapted to come specification. I contact with the cam-lever D, and thus op The object of my said invention is to proate the guard as the elevator passes up a1 vide a guard for elevator-hatchways which down.

shall be operated by the elevator itself as it The cam-lever D is pivoted at the bottom passes up and down. This object is accomone of the posts B by a pivot-bolt, d. and plished by mounting in bearings alongside the adapted to be operated by the strike 0 on t elevator a rock-shaft provided with guard elevator O. rails or arms which are adapted to be closed The rock-shaft E is mounted in bearings 1 down in front of the elevator or be raised up the posts a and B, or in any other suitab assaid shaft is partially rotated, attaching a manner, at a height corresponding to that cam-lever to said rock-shaft, and providing a which it is desired the guard-rails shall T strike upon the elevator, which will come in when closed. Guard rails or arms E a contact with said cam-lever, and thus operate rigidly attached to this shaft, which are IHdSi go said rock-shaft, as will be hereinafter more or lowered by partially rotating the sam particularly described and claimed. Said shaft has an arm, 6, which is connecte Referring to the accompanying drawings, by means of the link or rod 6, to the cal which are made a part hereof, and on which lever D, whereby said lever is enabled to pa similar letters of reference indicate similar tially rotate said shaft.

' parts, Figure 1 is a front elevation of an ele- The operation of my said invention may] vator and so much of the posts and surround recapitulated as follows: When the elevator ing flooring as is necessary to. illustrate my above or below the floor, the mechanism'is inventiomthe elevator being shown level with the position shown by Figs. 2 and 4, tl the floor and the guardarms in raised position; guard-rails being down,and access to the elev Fig. 2, a similar view, showing the elevator tor-hatchway being thus cut off. \Vhen tl below the floor and the guard-arms down; elevatoris raised or lowered,the strikes @0111 Fig. 3, a central vertical sectional view as in contact with the cam-lever D, swinging seen when looking to the right from the dotted up, and, through the link e and arm 0, part? line z z in Fig. 1, and Fig. 4 a top or plan rotating the rock-shaft E, which raises tl view of the several portions as seen when guard-rails to the position shown by Figs. looking downwardly from the dotted line y y and 3, which permits free access to the elev: in 2. I tor. Then the elevator is raised or lowere In said drawings the portions marked A still farther and the cam is released from 0-01 represent the iioor or frame-work surroundtact therewith, the guard-rails are caused b ing the elevator; 13, the posts upon which the their gravity to resume the position shown 13 elevatorslides; O, the elevator proper; D, the Figs. 2 and 4. As will be noticed upon a cam-lever, and E the rock-shaft. V examination of the drawings, the camlever I The floor A is the ordinary floor of a buildsoformed that it is operated equally well b ing, provided with the usual hatchway for the the elevator in passing, without reference t 5 elevator. Four posts are mounted thereon, the direction in which it is going,

two of which, a a, support the rock-shaft E, It will be understood, of course, that who and two, a a, serveas rests for the free ends the elevator is near the wall of a building of the arms E. 7 only one of the guard-rails E will be user The posts B are similar to the ordinary and the rock-shaft E need in that case onl tend from the central post, B, to one of the osts a, and a common stationary railing can a used in place of the removed portion.

Having thus fully described my said invenon, what I claim as new anddesire to secure y Letters Patent is- The combination of the elevator C, having ariker c, with the standards a, rook-shaft E, 1e extended arms E, the curved cam-lever D,

the link 6, and arm 6, all arranged and oper- IO ated substantially as shown and specified.

In Witness WhQIGOfI have hereunto set my hand and seal, at Indianapolis, Indiana, this 4th day of January, A. D. 1883.

ROBERT P. RANKIN. [L s.]

In presence of- V G. BRADFORD,

CHAS. L. THURBER. 

